How about swing weight / plowthrough on ground strokes?
And is there any metallic ping to it?

Not as much plow as my Aero Storm, but I do have it leaded with 6 grams in the head to add stability. I would definitely add lead to the 315 if I were to make that my stick of choice. I guess I didn't notice a metallic ping noise, but maybe if I had prior knowledge of that I might have noticed it, I guess I didn't know to look for it, therefore I didn't notice it.